Airworthiness Directives; Airbus SAS Airplanes, 24317-24319 [2025-10485]

Download as PDF Federal Register / Vol. 90, No. 110 / Tuesday, June 10, 2025 / Rules and Regulations (4) This AD does not adopt paragraphs 2. and 3., which includes the subsequent nonindented paragraphs, of Transport Canada AD CF–2019–44. (i) No Alternative Actions or Intervals After the existing maintenance or inspection program has been revised as required by paragraph (g) of this AD, no alternative actions (e.g., inspections) or intervals may be used unless the actions and intervals are approved as an alternative method of compliance (AMOC) in accordance with the procedures specified in paragraph (j) of this AD. (j) Additional AD Provisions The following provisions also apply to this AD: (1) Alternative Methods of Compliance (AMOCs): The Manager, International Validation Branch, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19, send your request to your principal inspector or responsible Flight Standards Office, as appropriate. If sending information directly to the manager of the International Validation Branch, send it to the attention of the person identified in paragraph (k) of this AD and email to: AMOC@faa.gov. Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the responsible Flight Standards Office. (2) Contacting the Manufacturer: For any requirement in this AD to obtain instructions from a manufacturer, the instructions must be accomplished using a method approved by the Manager, International Validation Branch, FAA; or Transport Canada; or MHI RJ Aviation ULC’s Transport Canada Design Approval Organization (DAO). If approved by the DAO, the approval must include the DAO-authorized signature. ddrumheller on DSK120RN23PROD with RULES1 (k) Additional Information For more information about this AD, contact Christopher Spencer, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; phone: 516–228– 7300; email: 9-avs-nyaco-cos@faa.gov. (l) Material Incorporated by Reference (1) The Director of the Federal Register approved the incorporation by reference of the material listed in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51. (2) You must use this material as applicable to do the actions required by this AD, unless this AD specifies otherwise. (i) Transport Canada AD CF–2019–44, dated December 9, 2019. (ii) [Reserved] (3) For Transport Canada material identified in this AD, contact Transport Canada, Transport Canada National Aircraft Certification, 159 Cleopatra Drive, Nepean, Ontario K1A 0N5, Canada; telephone 888– 663–3639; email TC.AirworthinessDirectivesConsignesdenavigabilite.TC@tc.gc.ca. You may find this material on the Transport Canada website at tc.canada.ca/en/aviation. (4) You may view this material at the FAA, Airworthiness Products Section, Operational Safety Branch, 2200 South 216th St., Des VerDate Sep<11>2014 16:29 Jun 09, 2025 Jkt 265001 Moines, WA. For information on the availability of this material at the FAA, call 206–231–3195. (5) You may view this material at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, visit www.archives.gov/federal-register/cfr/ ibr-locations or email fr.inspection@nara.gov. Issued on June 4, 2025. Steven W. Thompson, Acting Deputy Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2025–10434 Filed 6–9–25; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2025–0343; Project Identifier MCAI–2024–00562–T; Amendment 39–23058; AD 2025–11–12] RIN 2120–AA64 Airworthiness Directives; Airbus SAS Airplanes Federal Aviation Administration (FAA), DOT. ACTION: Final rule. AGENCY: The FAA is superseding Airworthiness Directive (AD) 2020–03– 14, which applied to all Airbus SAS Model A350–941 and –1041 airplanes. AD 2020–03–14 required an inspection of affected crew oxygen cylinder assemblies for any discrepancy and replacement of discrepant crew oxygen cylinder assemblies with serviceable parts, and allowed installation of affected parts under certain conditions. Since the FAA issued AD 2020–03–14, the supplier introduced an improved crew oxygen cylinder assembly, that will ensure the correct function of the system. This AD continues to require the actions in AD 2020–03–14, requires replacement of all affected parts with redesigned parts, and also prohibits the installation of affected parts. The FAA is issuing this AD to address the unsafe condition on these products. DATES: This AD is effective July 15, 2025. The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD as of July 15, 2025. ADDRESSES: AD Docket: You may examine the AD docket at regulations.gov under Docket No. FAA–2025–0343; or in person at Docket Operations between 9 a.m. and 5 p.m., Monday through Friday, except SUMMARY: PO 00000 Frm 00003 Fmt 4700 Sfmt 4700 24317 Federal holidays. The AD docket contains this final rule, the mandatory continuing airworthiness information (MCAI), any comments received, and other information. The address for Docket Operations is U.S. Department of Transportation, Docket Operations, M– 30, West Building Ground Floor, Room W12–140, 1200 New Jersey Avenue SE, Washington, DC 20590. Material Incorporated by Reference: • For European Union Aviation Safety Agency (EASA) material identified in this AD, contact EASA, Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; telephone +49 221 8999 000; email ADs@easa.europa.eu. You may find this material on the EASA website at ad.easa.europa.eu. • You may view this material at the FAA, Airworthiness Products Section, Operational Safety Branch, 2200 South 216th St., Des Moines, WA. For information on the availability of this material at the FAA, call 206–231–3195. It is also available at regulations.gov under Docket No. FAA–2025–0343. FOR FURTHER INFORMATION CONTACT: Nicole Tsang, Aviation Safety Engineer, FAA, 2200 South 216th St., Des Moines, WA 98198; telephone 206–231–3959; email nicole.s.tsang@faa.gov. SUPPLEMENTARY INFORMATION: Background The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 to supersede AD 2020–03–14, Amendment 39–19839 (85 FR 11282, February 27, 2020) (AD 2020–03–14). AD 2020–03–14 applied to all Airbus SAS Model A350–941 and –1041 airplanes. AD 2020–03–14 required an inspection of crew oxygen cylinder assemblies having part number (P/N) 4441227–058–000 or P/N 4441227–058– 001 (affected crew oxygen cylinder assemblies) (also referred to as affected parts) for any discrepancy and replacement of discrepant crew oxygen cylinder assemblies with serviceable parts, and AD 2020–03–14 allowed installation of affected parts under certain conditions. The FAA issued AD 2020–03–14 to address loss of retention of the regulator inlet filter retainer on certain crew oxygen cylinder assemblies. This condition could lead to particle ingestion into the regulator during ground handling, possibly resulting in ignition/fire during system ground operational testing. The NPRM was published in the Federal Register on March 18, 2025 (90 FR 12501). The NPRM was prompted by AD 2024–0186, dated September 24, 2024, issued by EASA (EASA AD 2024– 0186) (also referred to as the MCAI), E:\FR\FM\10JNR1.SGM 10JNR1 24318 Federal Register / Vol. 90, No. 110 / Tuesday, June 10, 2025 / Rules and Regulations which is the Technical Agent for the Member States of the European Union. The MCAI states that the supplier introduced an improved crew oxygen cylinder assembly having P/N 4441227– 058–002, to ensure the correct function of the system. In the NPRM, the FAA proposed to continue to require the actions in AD 2020–03–14, to require replacement of all affected parts with redesigned parts, and to also prohibit the installation of affected parts, as specified in EASA AD 2024–0186. The FAA is issuing this AD to address the unsafe condition on these products. You may examine the MCAI in the AD docket at regulations.gov under Docket No. FAA–2025–0343. International (ALPA), who supported the NPRM without change. Material Incorporated by Reference Under 1 CFR Part 51 Conclusion The FAA reviewed EASA AD 2024– 0186, which specifies procedures for an inspection of each crew oxygen cylinder assembly for any discrepancy (a loose part making a sound during agitation of the cylinder), replacement of any affected crew oxygen cylinder with a serviceable part, and eventual replacement of each affected crew oxygen cylinder with a redesigned part. EASA AD 2024–0186 also prohibits the installation of affected parts. This material is reasonably available because the interested parties have access to it through their normal course of business or by the means identified in the ADDRESSES section. These products have been approved by the civil aviation authority of another country and are approved for operation in the United States. Pursuant to the FAA’s bilateral agreement with this State of Design Authority, that authority has notified the FAA of the unsafe condition described in the MCAI referenced above. The FAA reviewed the relevant data, considered any comments received, and determined that air safety requires adopting this AD as proposed. Accordingly, the FAA is issuing this AD to address the unsafe condition on these products. Except for minor editorial changes, this AD is adopted as proposed in the NPRM. None of the changes will increase the economic burden on any operator. Discussion of Final Airworthiness Directive Comments The FAA received a comment from the Air Line Pilots Association, Costs of Compliance The FAA estimates that this AD affects 33 airplanes of U.S. registry. The FAA estimates the following costs to comply with this AD: ESTIMATED COSTS FOR REQUIRED ACTIONS Action Labor cost Retained actions from AD 2020–03–14 ...... New actions ................................................. 1 work-hour × $85 per hour = $85 ............. Up to 15 work-hours × $85 per hour = $1,275. The FAA estimates the following costs to do any necessary on-condition replacements that would be required Cost per product Parts cost based on the results of any required actions. The FAA has no way of $0 12,800 $85 ...................... Up to $14,075 ..... Cost on U.S. operators $2,805. Up to $464,475. determining the number of aircraft that might need these on-condition actions: ESTIMATED COSTS OF ON-CONDITION ACTIONS Labor cost Parts cost Cost per product 10 work-hours × $85 per hour = $850 ................................................................................................................ $6,940 $7,790 According to the manufacturer, some or all of the costs of this AD may be covered under warranty, thereby reducing the cost impact on affected operators. The FAA does not control warranty coverage for affected operators. As a result, the FAA has included all known costs in the cost estimate. ddrumheller on DSK120RN23PROD with RULES1 Authority for This Rulemaking Title 49 of the United States Code specifies the FAA’s authority to issue rules on aviation safety. Subtitle I, section 106, describes the authority of the FAA Administrator. Subtitle VII: Aviation Programs, describes in more detail the scope of the Agency’s authority. The FAA is issuing this rulemaking under the authority described in Subtitle VII, Part A, Subpart III, Section 44701: General requirements. Under VerDate Sep<11>2014 16:29 Jun 09, 2025 Jkt 265001 that section, Congress charges the FAA with promoting safe flight of civil aircraft in air commerce by prescribing regulations for practices, methods, and procedures the Administrator finds necessary for safety in air commerce. This regulation is within the scope of that authority because it addresses an unsafe condition that is likely to exist or develop on products identified in this rulemaking action. For the reasons discussed above, I certify that this AD: (1) Is not a ‘‘significant regulatory action’’ under Executive Order 12866, (2) Will not affect intrastate aviation in Alaska, and (3) Will not have a significant economic impact, positive or negative, on a substantial number of small entities under the criteria of the Regulatory Flexibility Act. Regulatory Findings List of Subjects in 14 CFR Part 39 This AD will not have federalism implications under Executive Order 13132. This AD will not have a substantial direct effect on the States, on the relationship between the national government and the States, or on the distribution of power and responsibilities among the various levels of government. Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety. PO 00000 Frm 00004 Fmt 4700 Sfmt 4700 The Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows: E:\FR\FM\10JNR1.SGM 10JNR1 Federal Register / Vol. 90, No. 110 / Tuesday, June 10, 2025 / Rules and Regulations PART 39—AIRWORTHINESS DIRECTIVES 1. The authority citation for part 39 continues to read as follows: ■ Authority: 49 U.S.C. 106(g), 40113, 44701. § 39.13 [Amended] 2. The FAA amends § 39.13 by: a. Removing Airworthiness Directive (AD) 2020–03–14, Amendment 39– 19839 (85 FR 11282, February 27, 2020); and ■ b. Adding the following new AD: ■ ■ 2025–11–12 Airbus SAS: Amendment 39– 23058; Docket No. FAA–2025–0343; Project Identifier MCAI–2024–00562–T. (a) Effective Date This airworthiness directive (AD) is effective July 15, 2025. (c) Applicability This AD applies to all Airbus SAS Model A350–941 and –1041 airplanes, certificated in any category. (d) Subject Air Transport Association (ATA) of America Code 35, Oxygen. (e) Unsafe Condition This AD was prompted by loss of retention of the regulator inlet filter retainer on certain crew oxygen cylinder assemblies. The FAA is issuing this AD to address loss of retention of the regulator inlet filter retainer on certain crew oxygen cylinder assemblies. The unsafe condition, if not addressed, could result in particle ingestion into the regulator during ground handling, possibly resulting in ignition/fire during system ground operational testing. (f) Compliance Comply with this AD within the compliance times specified, unless already done. ddrumheller on DSK120RN23PROD with RULES1 (g) Requirements Except as specified in paragraph (h) of this AD: Comply with all required actions and compliance times specified in, and in accordance with, European Union Aviation Safety Agency (EASA) AD 2024–0186, dated September 24, 2024 (EASA AD 2024–0186). (h) Exceptions to EASA AD 2024–0186 (1) Where EASA AD 2024–0186 refers to its effective date, this AD requires using the effective date of this AD. (2) Where EASA AD 2024–0186 refers to July 30, 2019 (the effective date of EASA AD 2019–0168), this AD requires using April 2, 2020 (the effective date of AD 2020–03–14). (3) Where paragraphs (1) and (2) of EASA AD 2024–0186 state ‘‘the instructions of the AOT’’, this AD requires replacing that text with ‘‘paragraph 4.2.2., Inspection Requirements, of the AOT.’’ 16:29 Jun 09, 2025 Jkt 265001 (i) No Reporting and No Return of Parts Requirements Although the material referenced in EASA AD 2024–0186 specifies to submit certain information and send removed parts to the manufacturer, this AD does not include those requirements. (j) Additional AD Provisions (b) Affected ADs This AD replaces AD 2020–03–14, Amendment 39–19839 (85 FR 11282, February 27, 2020) (AD 2020–03–14). VerDate Sep<11>2014 (4) Where paragraph (1) of EASA AD 2024– 0186 specifies to ‘‘inspect each affected part’’, this AD requires replacing that text with ‘‘do a one-time inspection of any affected part that is installed on-wing’’. (5) Where paragraph (2) of EASA AD 2024– 0186 specifies if ‘‘any discrepancy is detected, as defined in the AOT,’’ this AD requires replacing those words with ‘‘any loose part making a sound during agitation of the cylinder is detected’’. (6) This AD does not adopt the ‘‘Remarks’’ section of EASA AD 2024–0186. The following provisions also apply to this AD: (1) Alternative Methods of Compliance (AMOCs): The Manager, AIR–520, Continued Operational Safety Branch, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19, send your request to your principal inspector or responsible Flight Standards Office, as appropriate. If sending information directly to the manager of the Continued Operational Safety Branch, send it to the attention of the person identified in paragraph (k) of this AD and email to: AMOC@faa.gov. Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the responsible Flight Standards Office. (2) Contacting the Manufacturer: For any requirement in this AD to obtain instructions from a manufacturer, the instructions must be accomplished using a method approved by the Manager, AIR–520, Continued Operational Safety Branch, FAA; or EASA; or Airbus SAS’s EASA Design Organization Approval (DOA). If approved by the DOA, the approval must include the DOAauthorized signature. (3) Required for Compliance (RC): Except as required by paragraphs (i) and (j)(2) of this AD, if any material referenced in EASA AD 2024–0186 contains paragraphs that are labeled as RC, the instructions in RC paragraphs, including subparagraphs under those paragraphs, must be done to comply with this AD; any paragraphs, including subparagraphs under those paragraphs, that are not identified as RC are recommended. The instructions in paragraphs, including subparagraphs under those paragraphs, not identified as RC may be deviated from using accepted methods in accordance with the operator’s maintenance or inspection program without obtaining approval of an AMOC, provided the instructions identified as RC can be done and the airplane can be put back in an airworthy condition. Any substitutions or changes to instructions identified as RC require approval of an AMOC. PO 00000 Frm 00005 Fmt 4700 Sfmt 4700 24319 (k) Additional Information For more information about this AD, contact Nicole Tsang, Aviation Safety Engineer, FAA, 2200 South 216th St., Des Moines, WA 98198; telephone 206–231– 3959; email nicole.s.tsang@faa.gov. (l) Material Incorporated by Reference (1) The Director of the Federal Register approved the incorporation by reference of the material listed in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51. (2) You must use this material as applicable to do the actions required by this AD, unless this AD specifies otherwise. (i) European Union Aviation Safety Agency (EASA) AD 2024–0186, dated September 24, 2024. (ii) [Reserved] (3) For EASA material identified in this AD, contact EASA, Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; telephone +49 221 8999 000; email ADs@easa.europa.eu. You may find this material on the EASA website at ad.easa.europa.eu. (4) You may view this material at the FAA, Airworthiness Products Section, Operational Safety Branch, 2200 South 216th St., Des Moines, WA. For information on the availability of this material at the FAA, call 206–231–3195. (5) You may view this material at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, visit www.archives.gov/federal-register/cfr/ ibr-locations or email fr.inspection@nara.gov. Issued on June 4, 2025. Lona C. Saccomando, Acting Deputy Director, Integrated Certificate Management Division, Aircraft Certification Service. [FR Doc. 2025–10485 Filed 6–9–25; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Office of the Secretary 14 CFR Part 382 [Docket No. DOT–OST–2022–0144] RIN 2105–AF14 Ensuring Safe Accommodations for Air Travelers With Disabilities Using Wheelchairs Office of the Secretary of Transportation (OST), U.S. Department of Transportation. ACTION: Notification of enforcement discretion. AGENCY: This document announces that the U.S. Department of Transportation (DOT) will not take enforcement action against regulated entities before August 1, 2025, for failing to comply with the new or revised requirements contained in the final rule on ‘‘Ensuring Safe SUMMARY: E:\FR\FM\10JNR1.SGM 10JNR1

Agencies

[Federal Register Volume 90, Number 110 (Tuesday, June 10, 2025)]
[Rules and Regulations]
[Pages 24317-24319]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2025-10485]


-----------------------------------------------------------------------

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2025-0343; Project Identifier MCAI-2024-00562-T; 
Amendment 39-23058; AD 2025-11-12]
RIN 2120-AA64


Airworthiness Directives; Airbus SAS Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

-----------------------------------------------------------------------

SUMMARY: The FAA is superseding Airworthiness Directive (AD) 2020-03-
14, which applied to all Airbus SAS Model A350-941 and -1041 airplanes. 
AD 2020-03-14 required an inspection of affected crew oxygen cylinder 
assemblies for any discrepancy and replacement of discrepant crew 
oxygen cylinder assemblies with serviceable parts, and allowed 
installation of affected parts under certain conditions. Since the FAA 
issued AD 2020-03-14, the supplier introduced an improved crew oxygen 
cylinder assembly, that will ensure the correct function of the system. 
This AD continues to require the actions in AD 2020-03-14, requires 
replacement of all affected parts with redesigned parts, and also 
prohibits the installation of affected parts. The FAA is issuing this 
AD to address the unsafe condition on these products.

DATES: This AD is effective July 15, 2025.
    The Director of the Federal Register approved the incorporation by 
reference of a certain publication listed in this AD as of July 15, 
2025.

ADDRESSES: 
    AD Docket: You may examine the AD docket at regulations.gov under 
Docket No. FAA-2025-0343; or in person at Docket Operations between 9 
a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD 
docket contains this final rule, the mandatory continuing airworthiness 
information (MCAI), any comments received, and other information. The 
address for Docket Operations is U.S. Department of Transportation, 
Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200 
New Jersey Avenue SE, Washington, DC 20590.
    Material Incorporated by Reference:
     For European Union Aviation Safety Agency (EASA) material 
identified in this AD, contact EASA, Konrad-Adenauer-Ufer 3, 50668 
Cologne, Germany; telephone +49 221 8999 000; email [email protected]. 
You may find this material on the EASA website at ad.easa.europa.eu.
     You may view this material at the FAA, Airworthiness 
Products Section, Operational Safety Branch, 2200 South 216th St., Des 
Moines, WA. For information on the availability of this material at the 
FAA, call 206-231-3195. It is also available at regulations.gov under 
Docket No. FAA-2025-0343.

FOR FURTHER INFORMATION CONTACT: Nicole Tsang, Aviation Safety 
Engineer, FAA, 2200 South 216th St., Des Moines, WA 98198; telephone 
206-231-3959; email [email protected].

SUPPLEMENTARY INFORMATION: 

Background

    The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 
CFR part 39 to supersede AD 2020-03-14, Amendment 39-19839 (85 FR 
11282, February 27, 2020) (AD 2020-03-14). AD 2020-03-14 applied to all 
Airbus SAS Model A350-941 and -1041 airplanes. AD 2020-03-14 required 
an inspection of crew oxygen cylinder assemblies having part number (P/
N) 4441227-058-000 or P/N 4441227-058-001 (affected crew oxygen 
cylinder assemblies) (also referred to as affected parts) for any 
discrepancy and replacement of discrepant crew oxygen cylinder 
assemblies with serviceable parts, and AD 2020-03-14 allowed 
installation of affected parts under certain conditions. The FAA issued 
AD 2020-03-14 to address loss of retention of the regulator inlet 
filter retainer on certain crew oxygen cylinder assemblies. This 
condition could lead to particle ingestion into the regulator during 
ground handling, possibly resulting in ignition/fire during system 
ground operational testing.
    The NPRM was published in the Federal Register on March 18, 2025 
(90 FR 12501). The NPRM was prompted by AD 2024-0186, dated September 
24, 2024, issued by EASA (EASA AD 2024-0186) (also referred to as the 
MCAI),

[[Page 24318]]

which is the Technical Agent for the Member States of the European 
Union. The MCAI states that the supplier introduced an improved crew 
oxygen cylinder assembly having P/N 4441227-058-002, to ensure the 
correct function of the system.
    In the NPRM, the FAA proposed to continue to require the actions in 
AD 2020-03-14, to require replacement of all affected parts with 
redesigned parts, and to also prohibit the installation of affected 
parts, as specified in EASA AD 2024-0186. The FAA is issuing this AD to 
address the unsafe condition on these products.
    You may examine the MCAI in the AD docket at regulations.gov under 
Docket No. FAA-2025-0343.

Discussion of Final Airworthiness Directive

Comments

    The FAA received a comment from the Air Line Pilots Association, 
International (ALPA), who supported the NPRM without change.

Conclusion

    These products have been approved by the civil aviation authority 
of another country and are approved for operation in the United States. 
Pursuant to the FAA's bilateral agreement with this State of Design 
Authority, that authority has notified the FAA of the unsafe condition 
described in the MCAI referenced above. The FAA reviewed the relevant 
data, considered any comments received, and determined that air safety 
requires adopting this AD as proposed. Accordingly, the FAA is issuing 
this AD to address the unsafe condition on these products. Except for 
minor editorial changes, this AD is adopted as proposed in the NPRM. 
None of the changes will increase the economic burden on any operator.

Material Incorporated by Reference Under 1 CFR Part 51

    The FAA reviewed EASA AD 2024-0186, which specifies procedures for 
an inspection of each crew oxygen cylinder assembly for any discrepancy 
(a loose part making a sound during agitation of the cylinder), 
replacement of any affected crew oxygen cylinder with a serviceable 
part, and eventual replacement of each affected crew oxygen cylinder 
with a redesigned part. EASA AD 2024-0186 also prohibits the 
installation of affected parts. This material is reasonably available 
because the interested parties have access to it through their normal 
course of business or by the means identified in the ADDRESSES section.

Costs of Compliance

    The FAA estimates that this AD affects 33 airplanes of U.S. 
registry. The FAA estimates the following costs to comply with this AD:

                                      Estimated Costs for Required Actions
----------------------------------------------------------------------------------------------------------------
            Action                  Labor cost      Parts cost      Cost per product      Cost on U.S. operators
----------------------------------------------------------------------------------------------------------------
Retained actions from AD 2020-  1 work-hour x $85           $0  $85....................  $2,805.
 03-14.                          per hour = $85.
New actions...................  Up to 15 work-          12,800  Up to $14,075..........  Up to $464,475.
                                 hours x $85 per
                                 hour = $1,275.
----------------------------------------------------------------------------------------------------------------

    The FAA estimates the following costs to do any necessary on-
condition replacements that would be required based on the results of 
any required actions. The FAA has no way of determining the number of 
aircraft that might need these on-condition actions:

                 Estimated Costs of On-Condition Actions
------------------------------------------------------------------------
              Labor cost                Parts cost     Cost per product
------------------------------------------------------------------------
10 work-hours x $85 per hour = $850..       $6,940               $7,790
------------------------------------------------------------------------

    According to the manufacturer, some or all of the costs of this AD 
may be covered under warranty, thereby reducing the cost impact on 
affected operators. The FAA does not control warranty coverage for 
affected operators. As a result, the FAA has included all known costs 
in the cost estimate.

Authority for This Rulemaking

    Title 49 of the United States Code specifies the FAA's authority to 
issue rules on aviation safety. Subtitle I, section 106, describes the 
authority of the FAA Administrator. Subtitle VII: Aviation Programs, 
describes in more detail the scope of the Agency's authority.
    The FAA is issuing this rulemaking under the authority described in 
Subtitle VII, Part A, Subpart III, Section 44701: General requirements. 
Under that section, Congress charges the FAA with promoting safe flight 
of civil aircraft in air commerce by prescribing regulations for 
practices, methods, and procedures the Administrator finds necessary 
for safety in air commerce. This regulation is within the scope of that 
authority because it addresses an unsafe condition that is likely to 
exist or develop on products identified in this rulemaking action.

Regulatory Findings

    This AD will not have federalism implications under Executive Order 
13132. This AD will not have a substantial direct effect on the States, 
on the relationship between the national government and the States, or 
on the distribution of power and responsibilities among the various 
levels of government.
    For the reasons discussed above, I certify that this AD:
    (1) Is not a ``significant regulatory action'' under Executive 
Order 12866,
    (2) Will not affect intrastate aviation in Alaska, and
    (3) Will not have a significant economic impact, positive or 
negative, on a substantial number of small entities under the criteria 
of the Regulatory Flexibility Act.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Incorporation by 
reference, Safety.

The Amendment

    Accordingly, under the authority delegated to me by the 
Administrator, the FAA amends 14 CFR part 39 as follows:

[[Page 24319]]

PART 39--AIRWORTHINESS DIRECTIVES

0
1. The authority citation for part 39 continues to read as follows:

    Authority: 49 U.S.C. 106(g), 40113, 44701.


Sec.  39.13  [Amended]

0
2. The FAA amends Sec.  39.13 by:
0
a. Removing Airworthiness Directive (AD) 2020-03-14, Amendment 39-19839 
(85 FR 11282, February 27, 2020); and
0
b. Adding the following new AD:

2025-11-12 Airbus SAS: Amendment 39-23058; Docket No. FAA-2025-0343; 
Project Identifier MCAI-2024-00562-T.

(a) Effective Date

    This airworthiness directive (AD) is effective July 15, 2025.

(b) Affected ADs

    This AD replaces AD 2020-03-14, Amendment 39-19839 (85 FR 11282, 
February 27, 2020) (AD 2020-03-14).

(c) Applicability

    This AD applies to all Airbus SAS Model A350-941 and -1041 
airplanes, certificated in any category.

(d) Subject

    Air Transport Association (ATA) of America Code 35, Oxygen.

(e) Unsafe Condition

    This AD was prompted by loss of retention of the regulator inlet 
filter retainer on certain crew oxygen cylinder assemblies. The FAA 
is issuing this AD to address loss of retention of the regulator 
inlet filter retainer on certain crew oxygen cylinder assemblies. 
The unsafe condition, if not addressed, could result in particle 
ingestion into the regulator during ground handling, possibly 
resulting in ignition/fire during system ground operational testing.

(f) Compliance

    Comply with this AD within the compliance times specified, 
unless already done.

(g) Requirements

    Except as specified in paragraph (h) of this AD: Comply with all 
required actions and compliance times specified in, and in 
accordance with, European Union Aviation Safety Agency (EASA) AD 
2024-0186, dated September 24, 2024 (EASA AD 2024-0186).

(h) Exceptions to EASA AD 2024-0186

    (1) Where EASA AD 2024-0186 refers to its effective date, this 
AD requires using the effective date of this AD.
    (2) Where EASA AD 2024-0186 refers to July 30, 2019 (the 
effective date of EASA AD 2019-0168), this AD requires using April 
2, 2020 (the effective date of AD 2020-03-14).
    (3) Where paragraphs (1) and (2) of EASA AD 2024-0186 state 
``the instructions of the AOT'', this AD requires replacing that 
text with ``paragraph 4.2.2., Inspection Requirements, of the AOT.''
    (4) Where paragraph (1) of EASA AD 2024-0186 specifies to 
``inspect each affected part'', this AD requires replacing that text 
with ``do a one-time inspection of any affected part that is 
installed on-wing''.
    (5) Where paragraph (2) of EASA AD 2024-0186 specifies if ``any 
discrepancy is detected, as defined in the AOT,'' this AD requires 
replacing those words with ``any loose part making a sound during 
agitation of the cylinder is detected''.
    (6) This AD does not adopt the ``Remarks'' section of EASA AD 
2024-0186.

(i) No Reporting and No Return of Parts Requirements

    Although the material referenced in EASA AD 2024-0186 specifies 
to submit certain information and send removed parts to the 
manufacturer, this AD does not include those requirements.

(j) Additional AD Provisions

    The following provisions also apply to this AD:
    (1) Alternative Methods of Compliance (AMOCs): The Manager, AIR-
520, Continued Operational Safety Branch, FAA, has the authority to 
approve AMOCs for this AD, if requested using the procedures found 
in 14 CFR 39.19. In accordance with 14 CFR 39.19, send your request 
to your principal inspector or responsible Flight Standards Office, 
as appropriate. If sending information directly to the manager of 
the Continued Operational Safety Branch, send it to the attention of 
the person identified in paragraph (k) of this AD and email to: 
[email protected]. Before using any approved AMOC, notify your 
appropriate principal inspector, or lacking a principal inspector, 
the manager of the responsible Flight Standards Office.
    (2) Contacting the Manufacturer: For any requirement in this AD 
to obtain instructions from a manufacturer, the instructions must be 
accomplished using a method approved by the Manager, AIR-520, 
Continued Operational Safety Branch, FAA; or EASA; or Airbus SAS's 
EASA Design Organization Approval (DOA). If approved by the DOA, the 
approval must include the DOA-authorized signature.
    (3) Required for Compliance (RC): Except as required by 
paragraphs (i) and (j)(2) of this AD, if any material referenced in 
EASA AD 2024-0186 contains paragraphs that are labeled as RC, the 
instructions in RC paragraphs, including subparagraphs under those 
paragraphs, must be done to comply with this AD; any paragraphs, 
including subparagraphs under those paragraphs, that are not 
identified as RC are recommended. The instructions in paragraphs, 
including subparagraphs under those paragraphs, not identified as RC 
may be deviated from using accepted methods in accordance with the 
operator's maintenance or inspection program without obtaining 
approval of an AMOC, provided the instructions identified as RC can 
be done and the airplane can be put back in an airworthy condition. 
Any substitutions or changes to instructions identified as RC 
require approval of an AMOC.

(k) Additional Information

    For more information about this AD, contact Nicole Tsang, 
Aviation Safety Engineer, FAA, 2200 South 216th St., Des Moines, WA 
98198; telephone 206-231-3959; email [email protected].

(l) Material Incorporated by Reference

    (1) The Director of the Federal Register approved the 
incorporation by reference of the material listed in this paragraph 
under 5 U.S.C. 552(a) and 1 CFR part 51.
    (2) You must use this material as applicable to do the actions 
required by this AD, unless this AD specifies otherwise.
    (i) European Union Aviation Safety Agency (EASA) AD 2024-0186, 
dated September 24, 2024.
    (ii) [Reserved]
    (3) For EASA material identified in this AD, contact EASA, 
Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; telephone +49 221 
8999 000; email [email protected]. You may find this material on 
the EASA website at ad.easa.europa.eu.
    (4) You may view this material at the FAA, Airworthiness 
Products Section, Operational Safety Branch, 2200 South 216th St., 
Des Moines, WA. For information on the availability of this material 
at the FAA, call 206-231-3195.
    (5) You may view this material at the National Archives and 
Records Administration (NARA). For information on the availability 
of this material at NARA, visit www.archives.gov/federal-register/cfr/ibr-locations or email [email protected].

    Issued on June 4, 2025.
Lona C. Saccomando,
Acting Deputy Director, Integrated Certificate Management Division, 
Aircraft Certification Service.
[FR Doc. 2025-10485 Filed 6-9-25; 8:45 am]
BILLING CODE 4910-13-P
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